这场战争导致该地区人口锐减，基础设施遭到严重破坏。

The war led to the ___decimation of the region's population and infrastructure.

他们的军队在战役中遭受了毁灭性的打击。

Their army faced a brutal ___decimation during the battle.

公司决定裁掉10%的员工以降低成本。

The company decided on a 10% ___reduction of its workforce to reduce expenses.